/**
* Helios, OpenSource Monitoring
* Brought to you by the Helios Development Group
*
* Copyright 2007, Helios Development Group and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*
*/
package org.helios.netty;
import java.lang.reflect.Modifier;
import java.net.URL;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import java.util.TreeSet;
import org.jboss.netty.channel.ChannelHandler;
import org.reflections.Reflections;
import org.reflections.util.ClasspathHelper;
import org.reflections.util.ConfigurationBuilder;
/**
* <p>Title: ChannelHandlerDump</p>
* <p>Description: Utility class to analyze and categorize all ChannelHandler types found in the classpath</p>
* <p>Company: Helios Development Group LLC</p>
* @author Whitehead (nwhitehead AT heliosdev DOT org)
* <p><code>org.helios.netty.ChannelHandlerDump</code></p>
*/
public class ChannelHandlerDump {
/**
* Boots the analyzer
* @param args None
*/
public static void main(String[] args) {
Set<Class<? extends ChannelHandler>> sharable = new HashSet<Class<? extends ChannelHandler>>();
Set<Class<? extends ChannelHandler>> notSharable = new HashSet<Class<? extends ChannelHandler>>();
Set<URL> urls = new HashSet<URL>();
for(Iterator<URL> urlIter = ClasspathHelper.forClassLoader().iterator(); urlIter.hasNext();) {
URL url = urlIter.next();
if(url.toString().toLowerCase().endsWith(".jar")) {
urls.add(url);
}
}
Reflections ref = new Reflections(new ConfigurationBuilder().setUrls(urls));
for(Class<? extends ChannelHandler> clazz: ref.getSubTypesOf(ChannelHandler.class)) {
if(Modifier.isAbstract(clazz.getModifiers())) continue;
ChannelHandler.Sharable shareable = clazz.getAnnotation(ChannelHandler.Sharable.class);
if(shareable==null) {
notSharable.add(clazz);
} else {
sharable.add(clazz);
}
}
StringBuilder b = new StringBuilder("\n\t==========================\n\tSharable Channel Handlers\n\t==========================");
for(Class<? extends ChannelHandler> clazz: sharable) {
b.append("\n\t\t").append(clazz.getName());
}
b.append("\n");
log(b);
b = new StringBuilder("\n\t==========================\n\tNon Sharable Channel Handlers\n\t==========================");
for(Class<? extends ChannelHandler> clazz: notSharable) {
b.append("\n\t\t").append(clazz.getName());
}
b.append("\n");
log(b);
}
/**
* Logger
* @param msg The message to print
*/
public static void log(Object msg) {
System.out.println(msg);
}
}